2 * repository.h -- provides a map between service and shared objects
3 * Copyright (C) 2003-2004 Ushodaya Enterprises Limited
4 * Author: Charles Yates <charles.yates@pandora.be>
5 * Contributor: Dan Dennedy <dan@dennedy.org>
7 * This library is free software; you can redistribute it and/or
8 * modify it under the terms of the GNU Lesser General Public
9 * License as published by the Free Software Foundation; either
10 * version 2.1 of the License, or (at your option) any later version.
12 * This library is distributed in the hope that it will be useful,
13 * but WITHOUT ANY WARRANTY; without even the implied warranty of
14 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
15 * Lesser General Public License for more details.
17 * You should have received a copy of the GNU Lesser General Public
18 * License along with this library; if not, write to the Free Software
19 * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
22 #ifndef _MLT_REPOSITORY_H_
23 #define _MLT_REPOSITORY_H_
25 #include "mlt_types.h"
26 #include "mlt_profile.h"
28 /** Repository structure forward reference.
31 typedef struct mlt_repository_s
*mlt_repository
;
33 /** This callback is the main entry point into a module, which must be exported
34 with the symbol "mlt_register".
35 Inside the callback, the module registers the additional callbacks below.
38 typedef void ( *mlt_repository_callback
)( mlt_repository
);
40 /** These are callback functions that modules implement to construct services
43 typedef void *( *mlt_register_callback
)( mlt_profile
, mlt_service_type
, const char * /* service name */, void * /* arg */ );
44 typedef mlt_properties ( *mlt_metadata_callback
)( mlt_service_type
, const char * /* service name */, void * /* callback_data */ );
46 /** These convenience macros can be used to register services in a more declarative manner.
48 #define MLT_REPOSITORY void mlt_register( mlt_repository repository )
49 #define MLT_REGISTER( type, service, symbol ) ( mlt_repository_register( repository, (type), (service), ( mlt_register_callback )(symbol) ) )
50 #define MLT_REGISTER_METADATA( type, service, callback, data ) ( mlt_repository_register_metadata( repository, (type), (service), ( mlt_metadata_callback )(callback), (data) ) )
55 extern mlt_repository
mlt_repository_init( const char *directory
);
56 extern void mlt_repository_register( mlt_repository self
, mlt_service_type service_type
, const char *service
, mlt_register_callback
);
57 extern void *mlt_repository_create( mlt_repository self
, mlt_profile profile
, mlt_service_type type
, const char *service
, void *arg
);
58 extern void mlt_repository_close( mlt_repository self
);
59 extern mlt_properties
mlt_repository_consumers( mlt_repository self
);
60 extern mlt_properties
mlt_repository_filters( mlt_repository self
);
61 extern mlt_properties
mlt_repository_producers( mlt_repository self
);
62 extern mlt_properties
mlt_repository_transitions( mlt_repository self
);
63 extern void mlt_repository_register_metadata( mlt_repository self
, mlt_service_type type
, const char *service
, mlt_metadata_callback
, void *callback_data
);
64 extern mlt_properties
mlt_repository_metadata( mlt_repository self
, mlt_service_type type
, const char *service
);
65 extern mlt_properties
mlt_repository_languages( mlt_repository self
);